Pictures from Tinker AFB
| Center Instrument Panel |
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| This photo was also not actually taken at Tinker when I was in
training, but at the same time as the previous one and shows the engine guages in a
stabilized FL330 cruise condition. Like the flight instruments, the engine instruments are
computer-driven vertical tape guages which provide a lot of easy to interpret information
in a small space. Each rectangular "bay" shows the readings for each of the four
engines. From left to right, these guages show: EPR - Engine Pressure Ratio Basically, the ratio between the engine inlet and exhaust pressure RPM N1 - Speed of the N1, or low pressure compressor in percent of maximum RPM N2 - Speed of the N2, or high pressure compressor in percent of maximum EGT - Exhaust Gas Temperature in degrees C FF - Fuel Flow in pounds per hour As can be seen from the guages, this is a very thirsty puppy, inhaling 4000 pounds per hour per engine of the finest available JP-4. All that fuel must do something and a check of the EGT shows that it is running just under 400° C at an outside air temperature of -55° C. |
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